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In the dashcam video obtained by Bloomberg News, the driver argues that Kalanick is lowering fares and claims he lost $97,000 because of him. "I'm bankrupt because of you."

Kalanick lashes back. "You know what? Some people don't like to take responsibility for their own s---. They blame everything in their life on somebody else. Good luck," he said, then slamming the door.

After the video went public, Kalanick issued a statement to Uber employees. In it, he says he must "grow up" and apologizes to the driver, identified as Fawzi Kamel, as well as the driver community.

"This is the first time I've been willing to admit that I need leadership help and I intend to get it," he said.

Bloomberg News reports that the video was from early February this year.

It's the latest PR nightmare to hit Uber, which last week found itself in a sexual harassment firestorm. That stemmed from a detailed essay published by a former female Uber engineer, who charged that her prospects at the company evaporated after she complained about sexual advances from her boss. In the post about her year at Uber, Susan Fowler said the company's human resources department ignored her complaints because her boss was a high performer.

Kalanick called for an independent investigation of those issues, and the company hired former Attorney General Eric Holder to help.

On Tuesday, a top engineering executive, Amit Singhal, left Uber five weeks after his hire was announced. According to a report in the tech blog Recode, Singhal failed to disclose that he'd left his previous job at Google because of a sexual harassment allegation.